Seedream 4.5

Overview

Seedream 4.5 is ByteDance’s latest image generation model, featuring superior image quality and detail rendering. It supports both Text-to-Image and Image-to-Image generation with up to 4K resolution output.


Test API KEY: key_00000000000000000000000000000000

Endpoints

1. Create Task

Request


POST https://api.pixwith.ai/api/task/create

Headers

Header	Value	Required
Content-Type	application/json	Yes
Api-Key	{API_KEY}	Yes

Request Parameters

Parameter	Type	Required	Description
prompt	string	Yes	The input prompt (e.g., “a futuristic cyberpunk city at night”)
image_urls	array	Conditional	[“https://cdn.pixwith.ai/xxx.jpg ”]. Provide 1-4 images for Image-to-Image mode.
model_id	string	Yes	`0-32`
options	object	Yes	Configuration options for the task
options.prompt_optimization	boolean	Yes	If true, all prompt words will be automatically translated into English.
options.num_outputs	int	No	Number of images to generate. Valid values: `1` to `4`. Default: `1`.
options.resolution	string	Yes	Output resolution. Valid values: `'2K'`, `'4K'`. Default: `'2K'`.
options.aspect_ratio	string	Yes	Aspect ratio of the output. Valid values: `'1:1'` (Default), `'3:4'`, `'4:3'`, `'2:3'`, `'3:2'`, `'16:9'`, `'9:16'`, `'21:9'`.

Example Request - Text-to-Image


{
  "prompt": "a futuristic cyberpunk city at night",
  "model_id": "0-32",
  "options": {
    "prompt_optimization": true,
    "num_outputs": 1,
    "resolution": "2K",
    "aspect_ratio": "16:9"
  }
}

Example Request - Image-to-Image


{
  "prompt": "transform into anime style",
  "image_urls": ["https://cdn.pixwith.ai/example.jpg"],
  "model_id": "0-32",
  "options": {
    "prompt_optimization": true,
    "num_outputs": 1,
    "resolution": "4K",
    "aspect_ratio": "1:1"
  }
}

Response Parameters

Parameter	Type	Description
code	int	1=success, 0=error
message	string	Success and failure messages
data	object
data.task_id	string
data.estimated_time	int	Estimated time in seconds

Response


{
  "code": 1,
  "message": "success",
  "data": {
    "task_id": "d425ab4dc256f0ebaa84862b9cea8a3d",
    "estimated_time": 20
  }
}

Credits

Resolution	Credits per Image
2K	6
4K	6